/* ===============================================
   ALBERT'S HOMEPAGE - MAIN STYLESHEET V3 (ELEGANT BLUE + PHOTO BG)
   ===============================================
   1. IMPORTS
   2. CSS VARIABLES (NEW ELEGANT BLUE THEME)
   3. BASE & RESET STYLES
   4. REUSABLE COMPONENTS & UTILITIES
   5. MODAL STYLES
   =============================================== */

/* ===============================================
   1. IMPORTS
   =============================================== */
@import url('components/_header.css');
@import url('components/_hero.css');
@import url('components/_about.css');
@import url('components/_projects.css');
@import url('components/_socials.css');
@import url('components/_skills.css');
@import url('components/_contact.css');
@import url('components/_footer.css');


/* ===============================================
   2. CSS VARIABLES (NEW ELEGANT BLUE THEME)
   =============================================== */
:root, [data-theme='light'] {
    /* NEW Colors: Elegant Blue Palette */
    --primary-color: #007bff;      /* A classic, vibrant blue */
    --primary-color-alt: #0056b3;  /* A darker blue for hover effects */
    --highlight-color: #56aeff;     /* A lighter blue for highlights */
    --title-color: #212529;         /* A very dark grey, almost black */
    --text-color: #495057;          /* A softer grey for body text */
    --text-color-light: #6c757d;    /* A lighter grey for subtitles */
    --body-bg-color: #ffffff;         /* Base color, will be covered by image */
    --container-bg-color: rgba(255, 255, 255, 0.85); /* Frosted glass effect */
    --border-color: #dee2e6;
    --box-shadow: 0 5px 20px rgba(0, 0, 0, 0.07);
    --bg-overlay-color: rgba(255, 255, 255, 0.5); /* Light overlay for the background image */

    /* Typography, Spacing, Other */
    --font-primary: 'Poppins', 'Noto Sans SC', sans-serif;
    --h1-font-size: 3.2rem;
    --h2-font-size: 2.25rem;
    --h3-font-size: 1.5rem;
    --normal-font-size: 1rem;
    --small-font-size: 0.875rem;
    --header-height: 4.5rem;
    --section-padding: 5rem 0;
    --border-radius: 0.75rem;
    --transition: all 0.3s ease-in-out;
}

[data-theme='dark'] {
    /* Dark Theme Colors */
    --primary-color: #56aeff;      /* Lighter blue for dark background */
    --primary-color-alt: #80bfff;
    --highlight-color: #007bff;
    --title-color: #f8f9fa;         /* Almost white */
    --text-color: #adb5bd;          /* Light grey */
    --text-color-light: #6c757d;
    --body-bg-color: #121212;
    --container-bg-color: rgba(23, 29, 41, 0.8); /* Dark frosted glass */
    --border-color: #343a40;
    --box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
    --bg-overlay-color: rgba(0, 0, 0, 0.6); /* Dark overlay for the background image */
}


/* ===============================================
   3. BASE & RESET STYLES
   =============================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: var(--normal-font-size);
    background-color: var(--body-bg-color);
    color: var(--text-color);
    line-height: 1.6;
    padding-top: var(--header-height);
    transition: background-color 0.3s, color 0.3s;

    /* === NEW: FIXED PHOTO BACKGROUND === */
    background-image: url('../images/background.jpg');
    background-size: cover;
    background-position: center center;
    background-attachment: fixed; /* This is the magic property! */
    position: relative;
    z-index: 0;
}

/* This pseudo-element creates the light/dark overlay on top of the image */
body::before {
    content: '';
    position: fixed; /* Also fixed to cover the entire viewport */
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-overlay-color);
    z-index: -1; /* Place it between the body content and the background image */
    transition: var(--transition);
}

h1, h2, h3 {
    color: var(--title-color);
    font-weight: 700;
}

ul {
    list-style: none;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: var(--transition);
}

a:hover {
    color: var(--primary-color-alt);
}

img {
    max-width: 100%;
    height: auto;
}

/* ===============================================
   4. REUSABLE COMPONENTS & UTILITIES
   =============================================== */
.section {
    padding: var(--section-padding);
}

.section__title {
    font-size: var(--h2-font-size);
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}
.section__title::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 2px;
}

.container {
    max-width: 1120px;
    margin-inline: auto;
    padding-inline: 1.5rem;
}

.grid {
    display: grid;
    gap: 1.5rem;
}

.button {
    display: inline-block;
    background: var(--primary-color);
    color: #fff;
    padding: 0.9rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    border: 2px solid transparent;
    transition: var(--transition);
    cursor: pointer;
}

.button:hover {
    background: var(--primary-color-alt);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.button--ghost {
    background: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.button--ghost:hover {
    background: var(--primary-color);
    color: #fff;
}


/* ===============================================
   5. MODAL STYLES
   =============================================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal__content {
    background-color: var(--container-bg-color);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
    position: relative;
    transform: scale(0.9);
    transition: var(--transition);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.modal.active .modal__content {
    transform: scale(1);
}

.modal__content h3 {
    margin-bottom: 1rem;
    font-size: var(--h3-font-size);
}

.modal__content img {
    max-width: 250px;
    margin-bottom: 1rem;
}

.modal__close {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    font-size: 1.5rem;
    color: var(--text-color-light);
    cursor: pointer;
}